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Showing 13 to 24 of 621 entries
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Positron emission tomographic monitoring of dual phosphatidylinositol-3-kinase and mTOR inhibition in anaplastic large cell lymphoma.

OncoTargets and therapy

Graf N, Li Z, Herrmann K, Weh D, Aichler M, Slawska J, Walch A, Peschel C, Schwaiger M, Buck AK, Dechow T, Keller U.
PMID: 24920919
Onco Targets Ther. 2014 May 23;7:789-98. doi: 10.2147/OTT.S59314. eCollection 2014.

BACKGROUND: Dual phosphatidylinositol-3-kinase (PI3K)/mammalian target of rapamycin (mTOR) inhibition offers an attractive therapeutic strategy in anaplastic large cell lymphoma depending on oncogenic nucleophosmin-anaplastic lymphoma kinase (NPM-ALK) signaling. We tested the efficacy of a novel dual PI3K/mTOR inhibitor, NVP-BGT226 (BGT226),...

Fostering Formal Commutativity Knowledge with Approximate Arithmetic.

PloS one

Hansen SM, Haider H, Eichler A, Godau C, Frensch PA, Gaschler R.
PMID: 26560311
PLoS One. 2015 Nov 11;10(11):e0142551. doi: 10.1371/journal.pone.0142551. eCollection 2015.

How can we enhance the understanding of abstract mathematical principles in elementary school? Different studies found out that nonsymbolic estimation could foster subsequent exact number processing and simple arithmetic. Taking the commutativity principle as a test case, we investigated...

Novel method to study neutron capture of 235U and 238U simultaneously at keV energies.

Physical review letters

Wallner A, Belgya T, Bichler M, Buczak K, Dillmann I, Käppeler F, Lederer C, Mengoni A, Quinto F, Steier P, Szentmiklosi L.
PMID: 24877933
Phys Rev Lett. 2014 May 16;112(19):192501. doi: 10.1103/PhysRevLett.112.192501. Epub 2014 May 14.

The neutron capture cross sections of the main uranium isotopes, (235)U and (238)U, were measured simultaneously for keV energies, for the first time by combining activation technique and atom counting of the reaction products using accelerator mass spectrometry. New...

Signatures of spin pairing in chaotic quantum dots.

Physical review letters

Lüscher S, Heinzel T, Ensslin K, Wegscheider W, Bichler M.
PMID: 11289869
Phys Rev Lett. 2001 Mar 05;86(10):2118-21. doi: 10.1103/PhysRevLett.86.2118.

Coulomb blockade resonances are measured in a GaAs quantum dot in which both shape deformations and interactions are small. The parametric evolution of the Coulomb blockade peaks shows a pronounced pair correlation in both position and amplitude, which is...

Chemical characterization of bohrium (element 107).

Nature

Eichler R, Bruchle W, Dressler R, Dullmann CE, Eichler B, Gaggeler HW, Gregorich KE, Hoffman DC, Hubener S, Jost DT, Kirbach UW, Laue CA, Lavanchy VM, Nitsche H, Patin JB, Piguet D, Schadel M, Shaughnessy DA, Strellis DA, Taut S, Tobler L, Tsyganov YS, Turler A, Vahle A, Wilk PA, Yakushev AB.
PMID: 10993071
Nature. 2000 Sep 07;407(6800):63-5. doi: 10.1038/35024044.

The arrangement of the chemical elements in the periodic table highlights resemblances in chemical properties, which reflect the elements' electronic structure. For the heaviest elements, however, deviations in the periodicity of chemical properties are expected: electrons in orbitals with...

Experiments towards falsification of noncontextual hidden variable theories.

Physical review letters

Michler M, Weinfurter H, Zukowski M.
PMID: 10990969
Phys Rev Lett. 2000 Jun 12;84(24):5457-61. doi: 10.1103/PhysRevLett.84.5457.

We present two experiments testing the hypothesis of noncontextual hidden variables. The first one is based on observation of two-photon pseudo-Greenberger-Horne-Zeilinger correlations, with two of the originally three particles mimicked by the polarization degree of freedom and the spatial...

From quantum Hall ferromagnetism to huge longitudinal resistance at the 2/3 fractional quantum Hall state.

Physical review letters

Kraus S, Stern O, Lok JG, Dietsche W, Von Klitzing K, Bichler M, Schuh D, Wegscheider W.
PMID: 12484846
Phys Rev Lett. 2002 Dec 23;89(26):266801. doi: 10.1103/PhysRevLett.89.266801. Epub 2002 Dec 06.

We observe the transition from a spin-unpolarized to a polarized nu=2/3 fractional quantum Hall state at low currents (

Impact of snow cover on photoinhibition and winter dessication in evergreen Rhododendron ferrugineum leaves during subalpine winter.

Tree physiology

Neuner G, Ambach D, Aichner K.
PMID: 12651311
Tree Physiol. 1999 Sep;19(11):725-732. doi: 10.1093/treephys/19.11.725.

Effects of winter snow cover on photoinhibition and possible interactions with winter desiccation were investigated in situ in an evergreen subalpine woody species, Rhododendron ferrugineum L., at the alpine timberline (1950 m a.s.l.). Timing and duration of complete snow...

Intensity dependence of photoassociation in a quantum degenerate atomic gas.

Physical review letters

Prodan ID, Pichler M, Junker M, Hulet RG, Bohn JL.
PMID: 14525225
Phys Rev Lett. 2003 Aug 22;91(8):080402. doi: 10.1103/PhysRevLett.91.080402. Epub 2003 Aug 19.

We have measured the intensity dependent rate and frequency shift of a photoassociation transition in a quantum degenerate gas of 7Li. The rate increases linearly with photoassociation laser intensity for low intensities, whereas saturation is observed at higher intensities....

Anomalous spin dephasing in (110) GaAs quantum wells: anisotropy and intersubband effects.

Physical review letters

Döhrmann S, Hägele D, Rudolph J, Bichler M, Schuh D, Oestreich M.
PMID: 15524843
Phys Rev Lett. 2004 Oct 01;93(14):147405. doi: 10.1103/PhysRevLett.93.147405. Epub 2004 Sep 29.

A strong anisotropy of electron spin decoherence is observed in GaAs/(AlGa)As quantum wells grown on a (110) oriented substrate. The spin lifetime of spins perpendicular to the growth direction is about one order of magnitude shorter compared to spins...

Adsorption and dissociation of NO on stepped Pt (533).

The Journal of chemical physics

Backus EH, Eichler A, Grecea ML, Kleyn AW, Bonn M.
PMID: 15485257
J Chem Phys. 2004 Oct 22;121(16):7946-54. doi: 10.1063/1.1799956.

We present an experimental and theoretical investigation of the adsorption, desorption, and dissociation of NO on the stepped Pt (533) surface. By combining temperature programmed desorption and reflection absorption infrared spectroscopy, information about the adsorption sites at different temperatures...

Photoassociation spectroscopy of ultracold Cs below the 6P(3/2) limit.

The Journal of chemical physics

Pichler M, Chen H, Stwalley WC.
PMID: 15473735
J Chem Phys. 2004 Oct 08;121(14):6779-84. doi: 10.1063/1.1788657.

High precision photoassociation spectroscopy is performed in ultracold cesium gas, with detunings as large as 51 cm(-1) below the Cs(6S(1/2))+Cs(6P(3/2)) asymptote. Trap-loss fluorescence detection is used for detecting the photoassociation to excited state ultracold molecules. Long vibrational progressions are...

Showing 13 to 24 of 621 entries